Final answer to the problem
Step-by-step Solution
Specify the solving method
I. Express the LHS in terms of sine and cosine and simplify
Start from the LHS (left-hand side)
Learn how to solve trigonometric identities problems step by step online.
Learn how to solve trigonometric identities problems step by step online. Prove the trigonometric identity (1+tan(y)^2)cos(y)^2=1. section:I. Express the LHS in terms of sine and cosine and simplify. Start from the LHS (left-hand side). Rewrite \tan\left(y\right)^2 in terms of sine and cosine. Combine all terms into a single fraction with \cos\left(y\right)^2 as common denominator.